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63 lines
1.8 KiB
C
63 lines
1.8 KiB
C
/*
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* SPDX-FileCopyrightText: 2017-2025 Espressif Systems (Shanghai) CO LTD
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#pragma once
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <stdint.h>
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#include "ff.h"
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#define FF_DRV_NOT_USED 0xFF
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#include "diskio.h"
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#include "esp_err.h"
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/**
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* Structure of pointers to disk IO driver functions.
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*
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* See FatFs documentation for details about these functions
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*/
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typedef struct {
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DSTATUS (*init) (unsigned char pdrv); /*!< disk initialization function */
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DSTATUS (*status) (unsigned char pdrv); /*!< disk status check function */
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DRESULT (*read) (unsigned char pdrv, unsigned char* buff, uint32_t sector, UINT count); /*!< sector read function */
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DRESULT (*write) (unsigned char pdrv, const unsigned char* buff, uint32_t sector, UINT count); /*!< sector write function */
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DRESULT (*ioctl) (unsigned char pdrv, unsigned char cmd, void* buff); /*!< function to get info about disk and do some misc operations */
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} ff_diskio_impl_t;
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/**
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* Register or unregister diskio driver for given drive number.
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*
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* When FATFS library calls one of disk_xxx functions for driver number pdrv,
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* corresponding function in discio_impl for given pdrv will be called.
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*
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* @param pdrv drive number
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* @param discio_impl pointer to ff_diskio_impl_t structure with diskio functions
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* or NULL to unregister and free previously registered drive
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*/
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void ff_diskio_register(BYTE pdrv, const ff_diskio_impl_t* discio_impl);
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#define ff_diskio_unregister(pdrv_) ff_diskio_register(pdrv_, NULL)
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/**
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* Get next available drive number
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*
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* @param out_pdrv pointer to the byte to set if successful
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*
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* @return ESP_OK on success
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* ESP_ERR_NOT_FOUND if all drives are attached
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*/
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esp_err_t ff_diskio_get_drive(BYTE* out_pdrv);
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#ifdef __cplusplus
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}
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#endif
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